You can use either the keyboard or the mouse. Once the menu is setup using the keyboard is easy. If you have a system where the mouse doesn't work correctly in OSS, it will be easier to setup OSS options from Windows.

Should the issue persists, please provide vendor and model of the mouse and keyboard you use. Then submit a request for technical support. Attach all the collected files and information to your request along with the link to this thread. We will investigate the problem and try to provide you with a solution.